.p-a{
	position: absolute;
}
.p-r{
	position: relative;
}
.f-l{
	float:left;
}
.f-r{
	float:right;
}
.clear{
	clear:both;	
}
.d-ib{
	display:inline-block;
}
.d-b{
	display:block;
}
.ta-l{
	text-align:left;
}
.ta-c{
	text-align:center;
}
.ta-r{
	text-align:right;
}
.c-w{
	color:#fff;
}
.bg-w{
	background-color:#fff;
}
.c-r{
	color:red;
}